package com.xtaller.core.tps;

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;

/**
 * Created by Taller on 2017/8/8.
 */
public class RedisUtils {
    //Redis服务器IP
    private static String HOST = "120.76.220.138";
    //Redis的端口号
    private static int PORT = 6381;
    //访问密码
    private static String PASSWORD = "sdAnD3Dn2in4J";
    //控制一个pool最多有多少个状态为idle(空闲的)的jedis实例，默认值也是8。
    private static int MAX_IDLE = 200;
    //等待可用连接的最大时间，单位毫秒，默认值为-1，表示永不超时。如果超过等待时间，则直接抛出 JedisConnectionException
    private static int MAX_WAIT = 10000;
    private static int TIMEOUT = 10000;
    //在borrow一个jedis实例时，是否提前进行validate操作；如果为true，则得到的jedis实例均是可用的；
    private static boolean TEST_ON_BORROW = true;
    private static JedisPool jedisPool = null;

    /**
     * 初始化Redis连接池
     * */
    static {
        try{
            JedisPoolConfig config = new JedisPoolConfig();
            config.setMaxIdle(MAX_IDLE);
            config.setMaxWaitMillis(MAX_WAIT);
            config.setTestOnBorrow(TEST_ON_BORROW);
            //jedisPool = new JedisPool(config, HOST, PORT, TIMEOUT);
            jedisPool = new JedisPool(config, HOST, PORT, TIMEOUT, PASSWORD);
        }catch (Exception ex){
            ex.printStackTrace();
        }
    }

    /**
     * 获取Jedis实例
     * */
    public synchronized static Jedis getJedis(){
        try {
            if (jedisPool != null) {
                Jedis resource = jedisPool.getResource();
                return resource;
            } else {
                return null;
            }
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    /**
     * 释放jedis资源
     * */
    public static void returnResource(final Jedis jedis) {
        if (jedis != null) {
            jedisPool.returnResource(jedis);
        }
    }
}
